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Finding the Fourth Proportional to 57,469.79, 86,176.92 and 20,028.98

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Solution

The fourth proportional to 57,469.79, 86,176.92 and 20,028.98 is: 30,033.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,469.79 : 86,176.92 = 20,028.98 : x
  2. Step 2: Convert to fraction form
    57,469.79/86,176.92 = 20,028.98/x
  3. Step 3: Cross multiply
    57,469.79x = 86,176.92 × 20,028.98
  4. Step 4: Simplify right side
    57,469.79x = 1,726,035,807.14
  5. Step 5: Solve for x
    x = 1,726,035,807.14/57,469.79
  6. Step 6: Final answer
    x = 30,033.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.